Implantable Myopia Lens and Preparation Method Thereof

Abstract

The invention discloses an implantable myopia lens, comprising a lens body and a plurality of sheet-shaped support arms, cut and formed along the edge of the lens body. The angle between the plane of the support arms and the plane of the lens body is between 10 and 20 degrees, making the whole of the lens a spheroid. A transparent light guide zone is arranged on the lens body. The lens body and the support arms are all made of a same hydrophilic polyacrylate material. The invention also discloses a preparation method of the implantable myopia lens. The support arms of this invention are bendable, and the bending angle thereof is automatically adjusted according to the contour of a human eye when the lens is implanted therein. The lens of the same model can be implanted into human eyes of different sizes.

1 . An implantable myopia lens, wherein, said lens comprises a lens body and a plurality of sheet-shaped support arms, cut and formed along the edge of said lens body; said support arm includes a connection portion and a support portion; said connection portion is connected with the edge of said lens body; the angle between the plane of said support arms and the plane of said lens body is between 10 and 20 degrees, making the whole of the lens a spheroid, a transparent light guide zone is arranged on said lens body, and said lens body and said support arms are all made of a same hydrophilic polyacrylate material. 
     
     
         2 . The implantable myopia lens according to  claim 1 , wherein, said connection portion is a thin and short structure. 
     
     
         3 . The implantable myopia lens according to  claim 1 , wherein, a plurality of through holes are arranged on said lens body, and said through holes are not in said transparent light guide zone. 
     
     
         4 . The implantable myopia lens according to  claim 1 , wherein, said hydrophilic polyacrylate material is made from copolymerization of 2-hydroxyethyl methacrylate and alkyl acrylate derivatives. 
     
     
         5 . The implantable myopia lens according to  claim 1 , wherein, said hydrophilic polyacrylate material is made from copolymerization of alkyl acrylate, alkyl methacrylate and styrene. 
     
     
         6 . The implantable myopia lens according to  claim 1 , wherein, said hydrophilic polyacrylate material also contains ultraviolet absorbent and blue light absorbent. 
     
     
         7 . A preparation method of the implantable myopia lens according to  claim 1 , wherein, the method comprises the following steps:
 a. aerating nitrogen into small molecule monomer mixture solution of hydrophilic acrylates monomers to remove air dissolved in the solution, after 60 minutes, transfer this solution to a forming mould under nitrogen atmosphere, form sheet-shaped hydrophilic polyacrylate material with a thickness of about 3 mm at high temperature, and then cut the sheet-shaped material described above into circular rough lenses;   b. placing the cut circular rough lenses into an extraction device, extract with alcohol solvent to remove unpolymerized small molecules and medium-sized molecules, and dry subsequently; and   c. cutting the rough lenses to prepare the lens body with the transparent light guide zone, polish to remove tool marks, and finally cut out the support arms to obtain the lens.   
     
     
         8 . The implantable myopia lens according to  claim 4 , wherein, said hydrophilic polyacrylate material also contains ultraviolet absorbent and blue light absorbent. 
     
     
         9 . The implantable myopia lens according to  claim 5 , wherein, said hydrophilic polyacrylate material also contains ultraviolet absorbent and blue light absorbent.